Does anyone know how to make the plastic part of a blister pack used in the medical packaging?
Create a plane
Subdivide it 3 times

Select the vertices in the center ring and do mesh &gt; tranform &gt; &quot;to sphere&quot; and move the mouse to create an octagon.

Extrude the center

Add a subsurf modifier

set the shading to smooth

To have sharper edges add a  couple of loop cuts

Select the outer edges and then select Edge &gt; Crease and set the crease to 1.0 to make the outer edges sharp.

Add a couple of array modifiers